基于三层C/S、B/S集成的物流信息系统体系结构的研究

分析了两层客户端／服务器、三层C／S和三层浏览器／服务器3种传统的物流信息系统体系结构，在此基础上提出了一种基于三层C／S、B／S集成的LIS体系结构模型，并对该结构模型及其特点进行了分析和总结．该结构克服了两层C／S、三层C／S和三层B／S体系结构的不足，以便更好地发挥C／S和B／S体系结构的特性和优势．图4，参7．     

网络信息系统从Client/Server到Browser/Server

探讨了网络信息系统建设中Client/Server和Browser/Server的区别与联系，阐述了Client/Server系统的二层体系结构和Browser/Server系统的三层体系结构，以及Browser/Server与Client/Server体系结构的对比及移植的步骤。     

从C/S到B/S,再到三层(多层)结构——论体系结构的发展

面对临将来临的数字化经济时代，在管理思想和信息技术发生深刻变革的今天，我们应拿出什么样的体系结构去组织管理信息资源以适应这一变化的要求？本从出现背景、结构特征、优缺点和应用领域等几个方面分别论述了C/S、B/S和三层（多层）体系结构的发生和发展，总结了体系结构发展的历史，展望了体系结构发展的未来。     

文档管理系统模型研究与应用

比较了传统的客户机/服务器体系结构和三层式体系结构特点，针对房地产公司特点，根据RBAC授权模型原理。构建了分布式三层文档管理系统模型。     

C／S模式下实时考核系统的设计与实现

本文讨论了C／S模式下两层、三层和基于服务的体系结构的特点,结合实例给出了实时系统的设计与实现过程。     

基于B/S计算模型的Web技术在电子商务中的应用

介绍了应用系统中C/S计算模型的二层体系结构和三层体系结构的优缺点，详尽阐述了一种基于Internet的B/S计算模型，它可以解决C/S计算模型中存在的问题，并提出了基于B/S计算模型的Web应用技术在电子商务系统中的解决方案。     

浅谈三层网络体系结构的特点及构成

一、引言 随着网络技术在各行各业的深入应用,IT行业又出现了一种低费用、低管理开销、并享有Client／Server计算模式优点的新型体系结构——三层网络体系结构。如果把C／S体系结构称为“胖客户机／服务器”计算模式,那么三层体系结构可以称之为“瘦客户机／服务器”计算模式。     

C/S模式下实时考核系统的设计与实现

讨论了C／S模式下两层、三层和基于服务的体系结构的特点，给出了实时系统的设计与实现过程。     

基于COM+/DCOM的三层体系结构

随着计算机技术和网络技术的飞速发展，软件体系结构已逐渐从传统的C／S结构向三层体系结构发展．详细介绍了三层体系结构技术的原理、功能和特点；在COM 原理分析的基础上，对Windows DNA进行分析，提出了基于COM的三层结构的实现。     

数据库应用程序系统的体系结构模式探讨

数据库系统是由计算机系统、数据库、数据库应用程序、数据库管理系统及数据库管理人员组成的。在数据库应用程序系统的发展过程中,出现了一种新的网络计算模式：浏览器/Web服务器模式。计算机网络体系结构从最初的主机/终端模式到文件服务器/工作站模式,最终发展到C/S模式。为了解决C/S模式的诸多缺点,三层/多层客户机/服务器模式应运而生。本文对Web数据库系统的体系结构模式进行了一定的探讨。     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the     

Call for Papers

<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with     

Journal of Donghua University ( English Edition) Contents of Volume 31

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